--- binutils.orig/bfd/dwarf2.c 2019-11-13 11:49:52.211121564 +0000 +++ binutils-2.33.1/bfd/dwarf2.c 2019-11-13 11:53:26.991423055 +0000 @@ -2813,8 +2813,8 @@ static bfd_boolean comp_unit_maybe_decod static bfd_boolean find_abstract_instance (struct comp_unit * unit, - bfd_byte * orig_info_ptr, struct attribute * attr_ptr, + unsigned int recur_count, const char ** pname, bfd_boolean * is_linkage, char ** filename_ptr, @@ -2829,6 +2829,14 @@ find_abstract_instance (struct comp_unit struct attribute attr; const char *name = NULL; + if (recur_count == 100) + { + _bfd_error_handler + (_("DWARF error: abstract instance recursion detected")); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + /* DW_FORM_ref_addr can reference an entry in a different CU. It is an offset from the .debug_info section, not the current CU. */ if (attr_ptr->form == DW_FORM_ref_addr) @@ -2962,15 +2970,7 @@ find_abstract_instance (struct comp_unit info_ptr, info_ptr_end); if (info_ptr == NULL) break; - /* It doesn't ever make sense for DW_AT_specification to - refer to the same DIE. Stop simple recursion. */ - if (info_ptr == orig_info_ptr) - { - _bfd_error_handler - (_("DWARF error: abstract instance recursion detected")); - bfd_set_error (bfd_error_bad_value); - return FALSE; - } + switch (attr.name) { case DW_AT_name: @@ -2984,7 +2984,7 @@ find_abstract_instance (struct comp_unit } break; case DW_AT_specification: - if (!find_abstract_instance (unit, info_ptr, &attr, + if (!find_abstract_instance (unit, &attr, recur_count + 1, &name, is_linkage, filename_ptr, linenumber_ptr)) return FALSE; @@ -3200,7 +3200,7 @@ scan_unit_for_symbols (struct comp_unit case DW_AT_abstract_origin: case DW_AT_specification: - if (!find_abstract_instance (unit, info_ptr, &attr, + if (!find_abstract_instance (unit, &attr, 0, &func->name, &func->is_linkage, &func->file,